SOLUTION

Important note: The "Minimum scan engine" refers to the earliest Trend Micro scan engine version guaranteed to detect this threat. However, Trend Micro strongly recommends that you update to the latest version in order to get comprehensive protection. Download the latest scan engine here.

Solution:

(Note: Close all Internet Explorer windows before proceeding with the solution below.)

Terminating the Malware Process

The succeeding procedures require that the following processes be terminated. This step terminates related running malware processes.

Select the malware process, then press either the End Task or the End Process button, depending on the version of Windows on your computer.

To check if the malware process has been terminated, close Task Manager, and then open it again.

Repeat steps 2-4 for the following process:
win{Random 4 characters}.exe
(Note the {Random 4 characters} used in the string.)

Close Task Manager.

*NOTE: On computers running Windows 98 and ME, Windows Task Manager may not show certain processes. You can use a third party process viewer such as Process Explorer to terminate the malware process.

If the process you are looking for is not in the list displayed by Task Manager or Process Explorer, continue with the next solution procedure. If the malware process is in the list displayed by either Task Manager or Process Explorer, but you are unable to terminate it, restart your computer in safe mode.

Deleting the Malware File(s)

Right-click Start then click Search... or Find..., depending on the version of Windows you are running.

In the Named input box, type:
c:\mosvs8.exe

In the Look In drop-down list, select My Computer, then press Enter.

Once located, select the file then press SHIFT+DELETE.

Repeat steps 2 to 4 to delete the following file:
C:\win{Random 4 characters}.exe
(Note: Use the {Random 4 characters} noted in the process terminated earlier.)